How Often do you Fail to Prove That you are a Human?

Well, although the title might sound like it, I'm not actually in a mood to start a morbid discussion surrounding topics like sin, guilt, conscience, karma...you know well enough. Rather, I'm talking about cyberspace where security is the priority and to ensure which, many sites implement CAPTCHA verification to attest that you are indeed a human and not some bot or script. Although I vouch for the CAPTCHAs, they fluster me at times with abstruse words that I fail to prove myself a human despite best efforts. To add fuel to the fire, some sites even have bi-worded CAPTCHAs these days which is but a pain in the neck. To tell you roughly, my success rate with these meaningless words would be around 60-70%, I guess. And even if I really bother to concentrate harder and put more conscious effort on it, I can possibly raise it only by say another 10 to 15 percent.
So guys, tell me about it, do you love CAPTCHAs? So much that you've named your children after them? Or do you abhor them to an extent that you switch the site as soon you realize the need to enter CAPTCHA to post a comment? How often do you succeed with them, at first attempt of course? What's the highest number of trials you've taken to pass through a CAPTCHA? Do you even remember the word(s)? Do speak up!
PS: If you didn't know this, CAPTCHA is a contrived acronym for Completely Automated Public Turing test to tell Computers and Humans Apart

Hey I_L_U,
I really don't like those things either-I can see a need for them on some sites but mostly it seems like they are trying to make ppl squint lol
I can get them on the first try but not every time especially when they are all swirly that's when they really get on my nerves.
:)

I normally do not fail to prove I am human. The only times when they fail to acknowledge me as a human is when the site is having some issue recognising me. It is a signal that the site is going down... computers do break down too and I hate it then.